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6 x 12AX7 in my Sunfire Pre

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stereo_buff

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TFM-55

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Joined: Mon Dec 03, 2007 7:01 pm

Location: Rained out in W. Washington

Post Wed Jan 29, 2014 3:22 pm

Re: 6 x 12AX7 in my Sunfire Pre

F1nut wrote:Brian, if you can run 5751's in your pre, the late '50's Sylvania triple mica, black plate, D getter are to die for. They have thin yellow print. Do not get the later version with the green print.

5751s have a specified amplification factor of 70, the 12AX7s, 100. According to Bob, the phono PCB in the Sunfire Preamp needs all the gain the 12AX7s have to offer in that application. Perhaps some have had better luck than I... Brian, what was your experience?
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Snoop65

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SILVER-7t

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Post Wed Jan 29, 2014 4:09 pm

Re: 6 x 12AX7 in my Sunfire Pre

I like the 5751's in the Sunfire per. I have used Sylvania and GE triple mica black plates. My preferred tube is the Siemens 12AX7.
CARVER LIGHTSTAR REFERENCE+SUNFIRE CLASSIC TUBE PREAMPLIFIER+JBL XPL200+MUSIC HALL MMF-9.1+GRADO REFERENCE MASTER 1+CARVER SD/A 390t=WOW!!!!!!
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